a1 AFRC Institute for Animal Health, Pirbright Laboratory, Pirbright, Woking, Surrey, GU24 ONF, UK
Sentinel herds and a vector surveillance system were used to identify the presence of arboviruses in Oman. Two strains of bluetongue virus (BTV) serotype 4 and two strains of Akabane virus, were isolated and identified. Both BTV isolates and one Akabane virus isolate came from goats while the second Akabane isolate came from Culicoides imicola. This is the first isolation of an Akabane virus from Culicoides in Arabia. Vector competence studies with the Oman viruses in laboratory reared C. variipennis showed that after oral infection both viruses replicated in Culicoides and were maintained at high titre for at least 10 days post infection.
(Accepted November 02 1990)
c1 Correspondence and reprint requests to Dr P. S. Mellor.
p1 Present address: Department of Animal Health, Ministry of Agriculture and Fisheries, P.O. Box 467, Muscat, Sultanate of Oman.